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FDS and Smokeview Discussions
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As of March 21, 2024, the FDS and Smokeview Discussion Forum has moved to:
https://github.com/firemodels/
fds/discussions
To use the new Discussion Group and issue Tracker, you must have a GitHub account. You can register here:
https://github.com/
The Google Group will remain up and searchable, but posting will be disabled.
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Ryu_Kor
, …
Kevin
8
Mar 21
Questions about initial perturbations in LES & Vertical wind and temperature profiles
This thread is now here
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Questions about initial perturbations in LES & Vertical wind and temperature profiles
This thread is now here
Mar 21
zishanul haque hussain
, …
Kevin
6
Mar 21
Issue with pyro3d_wood_char.fds
This discussion is continued here
unread,
Issue with pyro3d_wood_char.fds
This discussion is continued here
Mar 21
Kevin
Mar 21
Good-bye GoogleGroups
We have released a new version of FDS, 6.9.0, and with that we are sun-setting this discussion forum.
unread,
Good-bye GoogleGroups
We have released a new version of FDS, 6.9.0, and with that we are sun-setting this discussion forum.
Mar 21
Muneeb Khalid
,
Randy McDermott
4
Mar 21
FDS Extract Surface
Please just use the GitHub thread. Thanks On Thu, Mar 21, 2024 at 8:11 AM Muneeb Khalid <khalid.
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FDS Extract Surface
Please just use the GitHub thread. Thanks On Thu, Mar 21, 2024 at 8:11 AM Muneeb Khalid <khalid.
Mar 21
Randy McDermott
2
Mar 20
imminent minor release and migration to GitHub discussions
Well, I lied. Google gets a stay. We ended up with a couple more issues to sort out today. So,
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imminent minor release and migration to GitHub discussions
Well, I lied. Google gets a stay. We ended up with a couple more issues to sort out today. So,
Mar 20
Marion
,
Kevin McGrattan
2
Mar 20
Grid Sensitivity E_COEFFICIENT
There is only one set of validation experiments in the FDS Validation Guide that invoke E_COEFFICIENT
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Grid Sensitivity E_COEFFICIENT
There is only one set of validation experiments in the FDS Validation Guide that invoke E_COEFFICIENT
Mar 20
Fraser Munnoch
,
Kevin McGrattan
5
Mar 20
Unexpected High Negative Pressure
There appears to be a problem where the merging of pressure zones is not working right. This might
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Unexpected High Negative Pressure
There appears to be a problem where the merging of pressure zones is not working right. This might
Mar 20
Firas Shawash
,
dr_jfloyd
2
Mar 19
Beta versions of an FDS
Only those feature specifically noted as beta features are in beta testing (GEOM, 3D heat transfer,
unread,
Beta versions of an FDS
Only those feature specifically noted as beta features are in beta testing (GEOM, 3D heat transfer,
Mar 19
Hosein Sadeghi
,
dr_jfloyd
4
Mar 19
Problem with VEL_PART
Setting a small drag coefficent will decouple particles from the gas flow, but in that case not sure
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Problem with VEL_PART
Setting a small drag coefficent will decouple particles from the gas flow, but in that case not sure
Mar 19
Sal Marsico
,
dr_jfloyd
2
Mar 19
CTRL TIME DELAY MONITOR
I think your easy options are: 1) Use the worst case time for all heads. The fire code limits
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CTRL TIME DELAY MONITOR
I think your easy options are: 1) Use the worst case time for all heads. The fire code limits
Mar 19
yiqi CHENG
, …
Kevin McGrattan
3
Mar 19
Setting the solid point will report an error
Probably because the device is near a corner of the obstruction and FDS cannot determine where to
unread,
Setting the solid point will report an error
Probably because the device is near a corner of the obstruction and FDS cannot determine where to
Mar 19
M.J
, …
Randy McDermott
4
Mar 19
Error: Species definition not provided
To Ed's point, if it were me, I would do a very simple test case with PENTANE (C5) as my fuel to
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Error: Species definition not provided
To Ed's point, if it were me, I would do a very simple test case with PENTANE (C5) as my fuel to
Mar 19
Vašek Kobilík
,
dr_jfloyd
3
Mar 18
REAC_FUEL and visibility in Pyrosim viewer
Thank you! Yes the SOOT_YIELD was defined as 0.008 Dne pondělí 18. března 2024 v 21:40:52 UTC+1
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REAC_FUEL and visibility in Pyrosim viewer
Thank you! Yes the SOOT_YIELD was defined as 0.008 Dne pondělí 18. března 2024 v 21:40:52 UTC+1
Mar 18
GGfire
, …
Tim O'Brien
12
Mar 18
tenability and choice of the device
See Dr Floyd's early comment. FED thermal at the point of maximum received radiation flux (in the
unread,
tenability and choice of the device
See Dr Floyd's early comment. FED thermal at the point of maximum received radiation flux (in the
Mar 18
Bastian Stahra
, …
Kevin McGrattan
22
Mar 18
Numerical Instability with Burn-Away Features in FDS
There is a parameter called MINIMUM_LAYER_THICKNESS on the SURF line that defines the thickness of
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Numerical Instability with Burn-Away Features in FDS
There is a parameter called MINIMUM_LAYER_THICKNESS on the SURF line that defines the thickness of
Mar 18
GAM
, …
Kevin McGrattan
3
Mar 18
Smoke for ventilated corridor
Create a very simple test case where the only difference is the size of the compartment. Remove all
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Smoke for ventilated corridor
Create a very simple test case where the only difference is the size of the compartment. Remove all
Mar 18
Tianzheng Sun
, …
dr_jfloyd
6
Mar 17
Run smokeview
Also you probably want to build the non-debug version and run that. Debug is useful for finding bugs
unread,
Run smokeview
Also you probably want to build the non-debug version and run that. Debug is useful for finding bugs
Mar 17
Sigurður Bjarni Gíslason
, …
Kevin McGrattan
4
Mar 14
Validation cases for active electrical cables as heat source
Hi Jason Floyd and Kevin McGrattan, Thank you for your responses. Yes to Jason Floyd, and I saw the
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Validation cases for active electrical cables as heat source
Hi Jason Floyd and Kevin McGrattan, Thank you for your responses. Yes to Jason Floyd, and I saw the
Mar 14
AMAN YADAV
,
Kevin McGrattan
4
Mar 14
Minimum density error
This might have to do with your specific operating system. FDS outputs computed information into a
unread,
Minimum density error
This might have to do with your specific operating system. FDS outputs computed information into a
Mar 14
Heidy Fajardo
,
dr_jfloyd
5
Mar 14
Issue running Complex Stoichiometry -
Thank you ! I modified the values and I took the enthalpy of formation of Dodecane. Le jeudi 14 mars
unread,
Issue running Complex Stoichiometry -
Thank you ! I modified the values and I took the enthalpy of formation of Dodecane. Le jeudi 14 mars
Mar 14
rodrigo.alm...@gmail.com
Mar 13
Solar panels
Hello, has anyone worked on computer simulation of fire in solar panels? Or involving these materials
unread,
Solar panels
Hello, has anyone worked on computer simulation of fire in solar panels? Or involving these materials
Mar 13
Neeraj Chaudhary
, …
Kevin McGrattan
6
Mar 13
fds job issue on hpc with
Your input file has only one MESH, but you are trying to run the job using two MPI processes. I am
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fds job issue on hpc with
Your input file has only one MESH, but you are trying to run the job using two MPI processes. I am
Mar 13
Muneeb Khalid
, …
dr_jfloyd
8
Mar 13
Minimum density - Clipped in Mesh 1 error
yes, i understood my mistake now. Although, to be clear, only 6 fans activate, remaining 6 do not
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Minimum density - Clipped in Mesh 1 error
yes, i understood my mistake now. Although, to be clear, only 6 fans activate, remaining 6 do not
Mar 13
Hosein Sadeghi
,
Kevin McGrattan
3
Mar 12
Ramped specific heat for solid materials
thank you. On Tuesday, March 12, 2024 at 8:31:25 PM UTC Kevin McGrattan wrote: SPECIFIC_HEAT_RAMP
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Ramped specific heat for solid materials
thank you. On Tuesday, March 12, 2024 at 8:31:25 PM UTC Kevin McGrattan wrote: SPECIFIC_HEAT_RAMP
Mar 12
Dylan B.
,
Kevin McGrattan
5
Mar 12
Question about PATH_LENGTH
Thank you ! Its clearer to me now. Le mardi 12 mars 2024 à 16:12:18 UTC+1, Kevin McGrattan a écrit :
unread,
Question about PATH_LENGTH
Thank you ! Its clearer to me now. Le mardi 12 mars 2024 à 16:12:18 UTC+1, Kevin McGrattan a écrit :
Mar 12
Juan Pedro Carbonell
,
Kevin McGrattan
4
Mar 11
Problem testing mpiexec (execution works in just one computer)
This is from the Intel guide. Try the second suggested Troubleshooting method, for example mpiexec ..
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Problem testing mpiexec (execution works in just one computer)
This is from the Intel guide. Try the second suggested Troubleshooting method, for example mpiexec ..
Mar 11
shiyi....@gmail.com
, …
David Sheppard
6
Mar 11
Fitting the HRR curve
The shape of the heat release curve also does not seem correct for a sofa. I would expect a curve
unread,
Fitting the HRR curve
The shape of the heat release curve also does not seem correct for a sofa. I would expect a curve
Mar 11
AMAN YADAV
, …
dr_jfloyd
12
Mar 9
FIRE MODEL in tunnel
Have you looked at the User's Guide section on Tunnels? If you are already following the advice
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FIRE MODEL in tunnel
Have you looked at the User's Guide section on Tunnels? If you are already following the advice
Mar 9
Jonas
, …
Randy McDermott
5
Mar 9
Smoke movement
Latest source? I think we have fixed issues with transport across mesh boundaries recently.
unread,
Smoke movement
Latest source? I think we have fixed issues with transport across mesh boundaries recently.
Mar 9
shiyi....@gmail.com
,
fde
3
Mar 8
Simulate a flame behavior after the sprinkler system has been activated
Thank you sir. I really appreciate your advice! fde <yilmaz....@gmail.com> 于2024年3月8日周五 20:
unread,
Simulate a flame behavior after the sprinkler system has been activated
Thank you sir. I really appreciate your advice! fde <yilmaz....@gmail.com> 于2024年3月8日周五 20:
Mar 8